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标题: ruby有没有go_to？ [打印本页]

作者: 受pia专用ID 时间: 2012-7-2 10:48
标题: ruby有没有go_to？
就是可以跳转到哪几行的方法dsu_plus_rewardpost_czw

作者: 铅笔描绘的思念 时间: 2012-7-2 11:07
本帖最后由铅笔描绘的思念于 2012-7-2 11:08 编辑

一般需要goto的话可以用Ruby的throw/catch来做。。。不过。。。RGSSMS没这东西。。。
引用《The Ruby Programming Language》上的例子：

RUBY 代码复制

for matrix in data do             # Process a deeply nested data structure.  
  catch :missing_data do          # Label this statement so we can break out.  
    for row in matrix do  
      for value in row do  
        throw :missing_data unless value # Break out of two loops at once.  
        # Otherwise, do some actual data processing here.  
      end  
    end  
  end  
  # We end up here after the nested loops finish processing each matrix.  
  # We also get here if :missing_data is thrown.  
end

for matrix in data do             # Process a deeply nested data structure.  


  catch :missing_data do          # Label this statement so we can break out.  


    for row in matrix do  


      for value in row do  


        throw :missing_data unless value # Break out of two loops at once.  


        # Otherwise, do some actual data processing here.  


      end  


    end  


  end  


  # We end up here after the nested loops finish processing each matrix.  


  # We also get here if :missing_data is thrown.  


end

goto不是Ruby关键字也不是内建方法……

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